Nothing ever floats "happily" in 3 basin. There are some interesting organisms and chemical traces in the basin which over time wreak havoc with the hull and systems. Ark had some serious issues with the amount of time she spent in reduced readiness which is why she's slated to go earlier than Lusty. Invincible is not coming back, ever. Been stripped to support the other two.
In any case, the Indians have a much better plan B, for which steel has been cut before our Lizzie. Don't believe the delivery dates in the programme, but she is underway.....
Vikrant class aircraft carrier - Wikipedia, the free encyclopedia